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Default Seeing occasional bubble in A/C sight glass

On Sat, 22 Mar 2008 06:18:10 -0700 (PDT), Mikepier

One day I was cleaning my yard and I noticed when I went to check on
my outdoor A/C unit, I saw an occasional bubble float by in the A/C
sight glass, like once every 3 seconds. After checking every couple
of days, I did not notice it anymore. Does this mean I have a leak, or
is the freon just expanding and contracting with the weather? The day
I saw the bubble it was warmer ( about 50 degrees) than it had been.
The unit has been off since the end of summer.

There is no way I can give an answer to this question. There is a lot
more involved than you would think. what type of metering device do
you have on your system? just seeing a bubble doesn't really mean
anything. it could be normal depending on temperature, metering
device, etc... any system should have regular yearly maintenence.
this would detect any problems.